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Table 4 Range of LA/RA area and corresponding PAOI in our study

From: Correlation of qanadli obstruction index (QOI) and atrial size on CT pulmonary angiography (CTPA) in patients with pulmonary thromboembolism

LA/RA area (range)

Qanadli index & obstruction %

Number of patients in study

0.72–1.21

 < 10 (< 25%)

22

0.62–0.79

10–20 (25–50%)

8

0.41–0.60

 > 20 (> 50%)

15